Standard No.:	JT/T 1030-2016
English Name:	Bus Electromagnetic Glass Breaker
Chinese Name:	客车电磁击窗器
Professional Classification:	JT    Professional Standard - Transport
Issued by:	Ministry of Transport
Issued on:	2016-02-02
Implemented on:	2016-4-10
Status:	valid
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	80.0
Delivery:	via email in 1 business day

Bus electromagnetic glass breaker 1 Scope This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of bus electromagnetic glass breaker. This standard is applicable to the bus electromagnetic glass breakers used for breaking the tempered glass with thickness of not greater than 5 mm of the bus emergency window. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition (including any amendment) applies. GB/T 191 Packaging — Pictorial marking for handling of goods GB/T 2423.1 Environmental testing for electric and electronic products — Part 2: Test methods — Tests A: Cold GB/T 2423.2 Environmental testing for electric and electronic products — Part 2: Test methods — Tests B: Dry heat GB/T 2423.17 Environmental testing for electric and electronic products — Part 2: Test methods — Test Ka: Salt mist GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of process stability) GB/T 3785.1 Electroacoustics — Sound level meters — Part 1: Specifications GB 7258 Technical specifications for safety of power driven vehicles operating on roads GB 9656 Safety glazing materials for road vehicles GB/T 15173 Electroacoustics —- Sound calibrators GB/T 18655 Vehicles, boats and internal combustion engines — Radio disturbance characteristics — Limits and methods of measurement for the protection of on-board receivers GB/T 28046.1-2011 Road vehicles — Environmental conditions and testing for electrical and electronic equipment — Part 1: General GB/T 28046.2-2011 Road vehicles — Environmental conditions and testing for electrical and electronic equipment — Part 2: Electrical loads GB/T 28046.4-2011 Road vehicles — Environmental conditions and testing for electrical and electronic equipment — Part 4: Climatic loads GB/T 28046.5-2013 Road vehicles — Environmental conditions and testing for electrical and electronic equipment — Part 5: Chemical loads QC/T 413-2002 Basic technical requirements for automotive electric equipment 3 Terms and definitions For the purpose of this document, the following terms and definitions apply. 3.1 bus electromagnetic glass breaker device used for breaking the tempered glass of the bus emergency window by electromagnetic force generated by the energized electromagnetic coil to push the impact mandrel of the movable iron core in the coil, in the principle of electromagnetic induction. Generally, it consists of impact mandrel, electromagnetic coil, shell, control switch, manual glass breaking mechanism and other parts 4 Technical requirements 4.1 General requirements 4.1.1 The nominal voltage of bus electromagnetic glass breakers [hereinafter referred to as "the product(s)"] is 12 V or 24 V. At 12 V, the operating voltage ranges from 9 V to 16 V; at 24 V, the operating voltage ranges from 18 V to 32 V. 4.1.2 Carbide with hardness of not less than 89 HRA shall be used at the tip of the impact mandrel of the product. The diameter of the impact mandrel is not less than 5 mm, and the protrusion displacement of the impact mandrel is not less than 5 mm.

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Technical requirements 5 Test methods 6 Inspection rules 7 Marking, packaging, transportation and storage